Non-destructive detection of moisture content in Orchardgrass (Dactylis glomerate L.) silage in wrapped round bales using microstrip transmission line sensor and its transmitted microwaves

IF 1.1 4区农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY

Grassland Science Pub Date : 2021-02-10 DOI:10.1111/grs.12324

Morinobu Matsuo, Seitaro Kon, Hiroki Takimoto, Akira Osada

引用次数: 0

Abstract

This paper demonstrates a non-destructive method for measuring the moisture content of silage in wrapped round bales (WRBs) via microwave signals using a microstrip transmission line (MSTL) sensor and vector network analyzer under outdoor conditions. We analyzed the relationships between the amplitude changes (Δα) and phase shifts (Δφ) of the microwave-transmitted signals from the WRB surfaces without tearing their films. The press MSTL method was strongly suggested over the touch MSTL method for the non-destructive measurement of WRB qualities. We also obtained strongly negative and significant correlations between the slopes of the linear regression lines (Δφ–Δα ratios) and moisture contents for frequencies in the range of 3.6–6.2 GHz. Thus, in this frequency zone, the press MSTL method can be effectively used to determine the moisture content of silage in WRBs.

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微带传输线传感器及其发射微波无损检测包捆紫草青贮水分

本文介绍了一种在室外条件下，利用微带传输线(MSTL)传感器和矢量网络分析仪，利用微波信号无损测量缠绕圆捆(wrb)青贮水分的方法。我们分析了在不撕裂WRB表面的情况下微波传输信号的振幅变化(Δα)和相移(Δφ)之间的关系。对于WRB质量的无损检测，我们强烈建议采用按压MSTL法，而不是触摸MSTL法。我们还发现，在3.6-6.2 GHz频率范围内，线性回归线的斜率(Δφ -Δα比率)与水分含量之间存在显著负相关。因此，在该频段内，压力机MSTL法可以有效地测定wrb青贮饲料的水分含量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Grassland Science Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

2.70

自引率

7.70%

发文量

审稿时长

>12 weeks

期刊介绍： Grassland Science is the official English language journal of the Japanese Society of Grassland Science. It publishes original research papers, review articles and short reports in all aspects of grassland science, with an aim of presenting and sharing knowledge, ideas and philosophies on better management and use of grasslands, forage crops and turf plants for both agricultural and non-agricultural purposes across the world. Contributions from anyone, non-members as well as members, are welcome in any of the following fields: grassland environment, landscape, ecology and systems analysis; pasture and lawn establishment, management and cultivation; grassland utilization, animal management, behavior, nutrition and production; forage conservation, processing, storage, utilization and nutritive value; physiology, morphology, pathology and entomology of plants; breeding and genetics; physicochemical property of soil, soil animals and microorganisms and plant nutrition; economics in grassland systems.